Abstract: A valve actuation system is provided for a valve of the type wherein at least two separate movements are utilized to achieve either opening or closing thereof. The actuation system includes a pair of hydraulic or pneumatic actuator units for automatically performing these two separate operations. An electrically energizable control valve is associated with each of these actuators for controlling the flow of a pressurized control medium therethrough to achieve actuation in the proper sequence for attaining the desired valve movement. A control circuit preferably comprises a plurality of switches responsive to the positions of these two valve actuators as well as the position, (viz., "valve open" or "valve close") of an operator accessible main control lever or switch. These switches deliver electrical power to energize the fluid flow control valves so as to automatically perform the correct sequence of actuator operations to open or close the valve, as desired.

Abstract: A ball valve unit for providing a fluid tight seal between a rotary valve member and its sealing components when in an open or closed position and which is adapted to permit a decrease in the sealing force to allow operation of the valve between the open and closed position. Said unit includes a body which defines a valve chamber and a pair of passages having openings communicating with the valve chamber on opposite sides thereof. An annular seal support is disposed about each opening and includes a substantially flat annular seal support surface. The seal support surfaces converge along a line equidistant from the surfaces in a first direction. A rotary ball valve member having a through bore for connecting the passages when in an open position is contained within the valve chamber.

Abstract: The invention contemplates a flow control valve that provides emergency sealing action upon inadvertent, thermally induced failure of the primary seal. The body of the valve includes an annular shoulder that is disposed adjacent an annular seat; and an annular collar of substantially incombustible corrosion resistant, nongalling material is specifically mounted on the shoulder, the collar including a first portion hermetically connected to the shoulder and a second, lip like portion free to move with respect to the shoulder and normally spaced from the selectively positionable valve element. This collar and more specifically the lip portion thereof is provided with prestressed regions normally situating the lip portion proximate the body shoulder and in position wherein said lip portion will not interface with the movable valve element.

Abstract: A hydraulic valve actuator includes at least one piston mounted for reciprocating movement in a cylinder for bidirectionally rotating a valve shaft mounted in the housing. A resilient spring member is held in compression between one side of the piston and an end wall of the cylinder for yieldably urging the piston to rotate the shaft in one direction, in the absence of a sufficient opposing hydraulic pressure. A hydraulic pump driven by an electric motor selectively drives the piston against the force of the spring member for rotating the valve shaft in the opposite direction. An electric solenoid operated valve is connected with the cylinder at either side of the piston, to provide a selectively openable path for hydraulic fluid, by-passing the pump to relieve the pressure applied thereby.

Abstract: There is disclosed a novel dispensing unit and system for the controlled, metered dispensing of one or more liquid products. The unit which serves to provide an important part of the system is designed for use with an arrangement wherein pressurized liquid products are delivered to the unit for controlled, metered dispensing. The unit is characterized primarily by the employment of metering chambers defined partially by flexible diaphragms. In conjunction with each said chamber, there are provided an inlet and outlet passage arrangement and a valve arrangement for controlling the supply and discharge of liquid product from said metering chamber. The unit includes a selectively operable control arrangement provided for opening and closing the valving arrangement, and also alternately pressurizing and venting the metering chamber diaphram with respect to a pressurized medium.

Abstract: There is disclosed a unique sealing arrangement for a valve of the type which includes a first element defining a valve body having a fluid passage extending therethrough, with a second, flow control element rotatably disposed in said passage for controlling the flow of fluid through said valve by movement between valve open and valve close positions. One of said elements, either the valve body or the flow control member, includes an annular sealing surface, while the other of said elements is provided with an annular seal ring support groove confronting said sealing surface in relative close proximity thereto, and having an annular seal ring member disposed therein.

Abstract: There is disclosed a system and dispensing unit for the controlled and metered dispensing of a liquid product, or of two or more liquid products, which should be combined in the right proportions only shortly before ultimate usage. The basic system, as disclosed, employs a single pressure source for pressurization of the liquid product and the pressurized dispensing of the liquid product from the dispensing unit, per se. In addition to the basic illustrated system, there are disclosed novel dispensing units which enables the dispensing of a uniform or proportioned amount of liquid upon each operation thereof. Further, these units are constructed so as to permit the dispensing of several different liquids simultaneously from the same unit, or the selected dispensing of the individual liquid.

Abstract: A closure-port type valve is constructed so as to minimize internal stresses and lengthen valve life. A limit plate is secured between a valve bonnet and a valve body; the limit plate halts motion of a diaphragm compressor as the compressor moves the diaphragm toward a valve-closed position. The limit plate and compressor are provided with surfaces which substantially completely support the diaphragm when the valve is fully opened. The limit plate and valve body seal and retain an outer diaphragm edge while achieving metal-to-metal contact, thereby preventing leakage and rocking movement which might otherwise be caused by repeated valve operation, or externally applied forces, such as overhung loads from actuators or seismic shocks.

Abstract: A differential drive in which a reference sprocket is stationary for power drive and rotated for manual drive. In power drive, planet sprockets are orbited around the reference sprocket and rotated thereby. Drive planet sprockets on the same shafts drive an output sprocket at a slightly different ratio from the reference drive as they orbid around it, whereby there is a slow net rotation imparted thereto. In manual drive, the planet shaft axes are fixed and the reference wheel is rotated to drive the planet sprockets and rotate the output sprocket.

Abstract: A method and apparatus for winding fiber glass roving, tape rope, and/or the like, on a mandrel. The apparatus includes a turntable rotatable in either direction about a vertical axis and carrying means for winding the reinforcing material on the mandrel in response to rotation of the turntable, the mandrel being located on the turntable axis. The machine also includes means for shifting the axis of a shaft carrying the mandrel angularly relative to a vertical position wherein the mandrel shaft axis coincides with the turntable axis. The apparatus further includes means for rotating the mandrel shaft about its axis in either direction, when the mandrel shaft is in its vertical position, to assist the rotation of the turntable in winding the reinforcing material about the mandrel. With this construction, the reinforcing material may be wound on the mandrel in a variety of patterns.